The family of a father-of-four who died a car crash last week has urged a potential witness to come forward and shed some light on how he was killed.
Matt McKnight, 41, and Paul Jones, 54, from Market Harborough, died when their car left the A427 near Dingley, Northamptonshire, and hit a tree at about 5.30pm, on Friday.
The pair, who were pronounced dead at the scene, were passengers in the one car collision.
The driver and a fourth passenger were taken to hospital with chest and back injuries. Their conditions are not known.
Police are trying to trace a second car, which they believe was in the area at the time, as they believe the motorist could hold vital clues as to what happened before the collision.
Mr McKnight's partner Sarah Phillips has asked the driver of the vehicle to come forward.
Speaking to the Mercury, she said: "We would all be very grateful if the person would come forward.
"If they have any information about what happened we would urge them to contact the police and help them piece together what happened."
No details about the second car have been released.
However, the Mr McKnight's family said the driver would know who he or she was.
"We just want to know what happened," said another family member. "We want the driver of the car that was following their car to come forward – it didn't stop at the time and might have information which could help the police."
News of the tragic crash has devastated both families and sent shockwaves through the community.
Regulars at the Red Cow, in High Street, Market Harborough, have described the duo as "lovely guys".
Manageress Tracy Woodhouse said: "I was gobsmacked I only saw them on Tuesday – they were really well-known in the pub and it's hit everyone pretty hard here.
"I knew Matt a bit better - I knew them both because they're great regulars - but I've known Matt a bit longer.
"He was always happy and always talking the mickey out of me. But they were both lovely guys."
The darts team, which Matt and Paul were both part of, has cancelled its game tomorrow night and will be holding a small gathering instead to remember the pair.
"The lads will raise a toast and have a few drinks in their memory and I'll put on a bit of food," said Tracy.
Anyone with information about the crash can call Northants Police on 101, or Drivewatch Hotline on 0800 174 615.
